EVALUATION KIT AVAILABLE MAX5487/MAX5488/ Dual, 256-Tap, Nonvolatile, SPI-Interface, MAX5489 Linear-Taper Digital Potentiometers General Description Benefits and Features The MAX5487/MAX5488/MAX5489 dual, linear-taper, Wiper Position Stored in Nonvolatile Memory digital potentiometers function as mechanical potentiometers (EEPROM) and Recalled Upon Power-Up or with a simple 3-wire SPI-compatible digital interface Recalled by an Interface Command that programs the wipers to any one of 256 tap positions. 3mm x 3mm x 0.8mm, 16-Pin TQFN or 14-Pin These digital potentiometers feature a nonvolatile memory TSSOP Packages (EEPROM) to return the wipers to their previously stored 1 LSB INL, 0.5 LSB DNL (Voltage-Divider Mode) positions upon power-up. The MAX5487 has an end-to-end resistance of 10k, 256 Tap Positions while the MAX5488 and MAX5489 have resistances of 35ppm/C End-to-End Resistance Temperature 50k and 100k , respectively. These devices have a low Coefficient 35ppm/C end-to-end temperature coefficient, and operate 5ppm/C Ratiometric Temperature Coefficient from a single +2.7V to +5.25V supply. 10k , 50k , and 100k End-to-End Resistance The MAX5487/MAX5488/MAX5489 are available in Values 16-pin 3mm x 3mm x 0.8mm TQFN or 14-pin TSSOP packages. Each device is guaranteed over the extended SPI-Compatible Serial Interface -40C to +85C temperature range. Reliability 200,000 Wiper Store Cycles Applications 50-Year Wiper Data Retention LCD Screen Adjustment +2.7V to +5.25V Single-Supply Operation Audio Volume Control Mechanical Potentiometer Replacement SPI is a trademark of Motorola, Inc. Low-Drift Programmable Filters Low-Drift Programmable-Gain Amplifiers Functional Diagram HA V DD 8 256 8-BIT GND DECODER WA LATCH SCLK SPI LA 16-BIT DIN INTERFACE POR NV RAM HB CS 256 8 8-BIT WB DECODER LATCH MAX5487 LB MAX5488 MAX5489 19-3478 Rev 4 4/10MAX5487/MAX5488/ Dual, 256-Tap, Nonvolatile, SPI-Interface, MAX5489 Linear-Taper Digital Potentiometers Absolute Maximum Ratings V to GND .........................................................-0.3V to +6.0V Continuous Power Dissipation (T = +70C) DD A All Other Pins 16-Pin TQFN (derate 17.5mW/C above +70C) ......1398mW to GND .............-0.3V to the lower of (V + 0.3V) and +6.0V 14-Pin TSSOP (derate 9.1mW/C above +70C) ........727mW DD Maximum Continuous Current into H , W , and L Operating Temperature Range ........................... -40C to +85C MAX5487 .....................................................................5.0mA Junction Temperature ......................................................+150C MAX5488 .....................................................................1.3mA Storage Temperature Range ............................ -60C to +150C MAX5489 .....................................................................0.6mA Lead Temperature (soldering, 10s) .................................+300C Soldering Temperature (reflow) .......................................+260C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC Electrical Characteristics (V = +2.7V to +5.25V, V = V , V = GND, T = -40C to +85C, unless otherwise noted. Typical values are at V = +5.0V, DD H DD L A DD T = +25C, unless otherwise noted.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC PERFORMANCE (Voltage-Divider Mode, Figure 1) Resolution N 256 Taps Integral Nonlinearity INL (Note 2) 1 LSB Differential Nonlinearity DNL (Note 2) 0.5 LSB Dual-Code Matching Register A = register B 2 LSB End-to-End Resistor Tempco TC 35 ppm/C R Ratiometric Resistor Tempco 5 ppm/C MAX5487 3.5 6 Full-Scale Error MAX5488 -0.6 +1.2 LSB MAX5489 -0.3 +1.2 MAX5487 3.5 6 Zero-Scale Error MAX5488 -0.6 1.5 LSB MAX5489 0.3 1 DC PERFORMANCE (Variable-Resistor Mode, Figure 1) Resolution 256 Taps V = 5.0V 1.5 DD Integral Nonlinearity (Note 3) LSB V = 3.0V 3 DD V = 5.0V 1 DD Differential Nonlinearity (Note 3) LSB V = 3.0V 1 DD DC PERFORMANCE (Resistor Characteristics) V = 5.0V 200 350 DD Wiper Resistance (Note 4) R W V = 3.0V 325 675 DD Wiper Capacitance C 50 pF W MAX5487 7.5 10 12.5 End-to-End Resistance R MAX5488 37.5 50 62.5 HL k MAX5489 75 100 125 Maxim Integrated 2 www.maximintegrated.com